Twisting head for spinning machines



May 17. 1927.

S. H. HELLAND TWISTING HEAD Fon SPINNING MACHINES Filed Dec. 11, 1926 INVEN TOR.

BY W M OWXUW A TTORNE Y.

Patented May 17, 1927.

UNITED STATES PATENT OFFICE.

SIGURD H. HELLAND, OF WHITINSVILLE, MASSACHUSETTS, ASSIGNOR T0 WHITINMACHINE WORKS, 015 WHITINSVILLE, MASSACHUSETTS, A CORPORATION OF MAS-SACHUSETTS.

TWISTING HEAD FOR SPINNING MACHINES.

Application filed December 11, 1926. Serial No. 154,211.

This invention relates to machines for spinning wool or cotton waste andhas particularreterence to the twisting head and the parts (o-operatingtherewith.

In spinning machines as now constructed each twisting head is rotatablein an upper and a lower closed bearing integral with a bracket bolted tothe framing of the machine. It occasion requires the removal of a headit is necessary to remove its bracket from its position on the machineframing thus entailing considerable expense for labor and loss in theproductive capacity of the machine due to the necessary stoppage toeffect the change.

The object of my invention is to provide a twisting head so constructedas to be readily removed from its supporting bearings with a minimumamount of time and labor.

This invention will be fully understood from the following descriptionconsidered in connection with the accompanying drawings in which Figure1 is a side elevation of a twisting head in its supporting bracket andshows the relation of the yarn engaging means on the head to the drawingrolls; Figure 2 is a front elevation of the twisting head and itsbearings; Figure 3 is a plan of the upper twisting head bearing; Figure4. is a front view of the upper hearing, and Figure 5 is an axialsectional view of the tubular body of the twisting head.

Referring to the drawings, 8 represents the drawing rolls, 9 the yarnengaging means on the twisting head, 10 designates a stationary railhorizontally positioned in the framing of a spinning machine, 11 a yokeshaped bracket fastened to the rail 10 and provided with U shapedbearings 12 and 13 in the upper and lower arms of the yoke respectively.A twisting head 14 is rotatably mounted in the bearings and is axiallypositioned therein by the shoulders of the power transmitting whirl 15abutting between the inner ends of the bearings 12 and 13, the whirlbeing adjustably mounted on the twisting head and fixed thereon by the iset screw 16 in the hub 17 of the whirl.

Each bearing is provided with a pair of oppositely disposed lugs 18 and19, 20 and 21 partially embracing the tubular body of the twisting headand so formed as to retain the said tubular body in its normal operativeposition in its bearings. This construction of the bearings provides anopening of a predetermined width between the ends of the oppositelydisposed lugs which allows space for the removal of the twisting headfrom its bearings by the co-action of the lugs with two pairs ofoppositely disposed lateral cutouts 252 and 23, 24 and 25 in theperiphery of the tubular body of the twisting head. The axial distancebetween the two pairs of cutouts being the same as that between theupper and lower pairs of retaining lugs so that when the cutoutsregister with the lugs the twisting head may be drawn out from itsbearings, there being ample clearance in the cutouts for the freepassage of the tubular body between the lugs.

It it is desirable to remove the twisting head from the machine, the setscrew 16 in the hub of the whirl 15 is loosened sufii ciently to allowthe tubular body of the twisting head to be raised until the cutoutsregister with their respective bearing lugs, then the operative drawsthe twisting head sideways clear from its bearings without the necessityof disturbing any other parts of the machine.

\Vhile I have illustrated herein a preferred embodiment of my invention,I do not wish to be limited to the constructional features shown.

I claim:

In a spinning machine, a twisting head comprising a rotative tubularbody having yarn engaging means at its lower end, two U shaped bearingsone above the other in which the tubular body is rotatable, a whirltransmitting motion to the tubular body and adjustably mounted thereonbetween the bearings, two oppositely disposed lugs on each bearingpartially eml'n'aring the tubular body for normally retaining said bodyin its bearings, and an upper and a lower set of oppositely disposedlateral cutouts in the periphery of the tubular body adapted to registerwith the retaining lugs of the upper and lower bearings respectivelythus facilitating the removal of the tubular body from its bearings.

In testimony whereof, I have signed this specification.

SIG URD H. HELLAND.

